*{
    margin: 0;
    padding: 0;
}
li{list-style: none;}
.txh{
    display: flex;
    
}
body,html{
    
    background: #f7f7f7;
}
.one{
	width: 100%；
    height:100%;

.box{
	width: 100%;
	height: 300px;
	.txh;
        justify-content: center;
	ul{

        margin-top: 40%;
        
        li:nth-child(2){
        	margin-top: 30%;
        }
	}
}
.dibu{
	position: fixed;
	bottom: 0;
	width: 100%;
	img{
		width: 100%;
	}
}
}